# Assign User to Shipments

You can assign a user to one or more shipments at once.

## Requirements

- An array of `shipment_id` values for the shipments you want to assign.
- The `user_id` (UUID) of the user you want to assign. The user must be an active member of your account.


## Limitations

- You can assign a user to a maximum of **500 shipments** per request.
- The user must be active on your account.


## Sample Request & Response